This restaurant is run by one of Ushuaia's craziest (in a good way) personalities. He doesn't mince words...there's a sign on the front door that advertises 'ceviche de la puta madre', and that's exactly what you can expect. Also go for the king crab in a spiced tomato sauce. And try the king crab plain to know what king crab expertly prepared tastes like. And oysters from Antarctica. The food and atmosphere here is unpretentious.